diff --git a/Gemfile.lock b/Gemfile.lock
index 1882738513..306823f143 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -127,7 +127,7 @@ GEM
     i18n (1.6.0)
       concurrent-ruby (~> 1.0)
     io-event (1.7.2)
-    json (2.7.2)
+    json (2.7.4)
     kramdown (2.4.0)
       rexml
     listen (3.9.0)